EP1985962B1 - A fog generator - Google Patents

A fog generator Download PDF

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Publication number
EP1985962B1
EP1985962B1 EP07008600A EP07008600A EP1985962B1 EP 1985962 B1 EP1985962 B1 EP 1985962B1 EP 07008600 A EP07008600 A EP 07008600A EP 07008600 A EP07008600 A EP 07008600A EP 1985962 B1 EP1985962 B1 EP 1985962B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
fog
vessel
purging
fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP07008600A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1985962A1 (en
Inventor
Alfons Vandoninck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bandit NV
Original Assignee
Bandit NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38514149&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1985962(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to EP10161792A priority Critical patent/EP2207005B1/en
Priority to EP07008600A priority patent/EP1985962B1/en
Priority to PT07008600T priority patent/PT1985962E/pt
Priority to DE602007007298T priority patent/DE602007007298D1/de
Priority to ES10161792T priority patent/ES2380578T3/es
Priority to AT07008600T priority patent/ATE472082T1/de
Priority to ES07008600T priority patent/ES2352787T3/es
Priority to DK07008600.4T priority patent/DK1985962T3/da
Priority to DK10161792.6T priority patent/DK2207005T3/da
Application filed by Bandit NV filed Critical Bandit NV
Priority to AT10161792T priority patent/ATE543071T1/de
Priority to PCT/EP2008/054930 priority patent/WO2008132112A1/en
Priority to US12/596,028 priority patent/US20100142933A1/en
Priority to TW097115494A priority patent/TW200907285A/zh
Publication of EP1985962A1 publication Critical patent/EP1985962A1/en
Publication of EP1985962B1 publication Critical patent/EP1985962B1/en
Application granted granted Critical
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63J—DEVICES FOR THEATRES, CIRCUSES, OR THE LIKE; CONJURING APPLIANCES OR THE LIKE
    • A63J5/00—Auxiliaries for producing special effects on stages, or in circuses or arenas
    • A63J5/02—Arrangements for making stage effects; Auxiliary stage appliances
    • A63J5/025—Devices for making mist or smoke effects, e.g. with liquid air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H9/00—Equipment for attack or defence by spreading flame, gas or smoke or leurres; Chemical warfare equipment
    • F41H9/06—Apparatus for generating artificial fog or smoke screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H9/00—Equipment for attack or defence by spreading flame, gas or smoke or leurres; Chemical warfare equipment
    • F41H9/06—Apparatus for generating artificial fog or smoke screens
    • F41H9/08—Smoke-pots without propulsive charge, i.e. stationary

Definitions

  • the present invention relates to a device for generating fog.
  • Fog generators are used in a variety of applications. They can be used in applications concerning security, e.g. for generating a fog screen by which goods or valuables are screened out from the intruder's sight, or for simulating fire as a training aid for emergency services or security forces. They can also be used in applications concerning entertainment, e.g. for creating lighting effects on stage, etc.
  • a main working principle of a fog generator is as follows: a fog generating fluid is driven into a heat exchanger by a pump or a propellant gas; in the heat exchanger, the fog generating fluid is heated and transferred to steam; the steam ejects then at the end of the heat exchanger in the form of a fog into the ambient.
  • a propellant gas selected from the group of halogenated hydrocarbons is used to drive the fog generating fluid into the heat exchanger.
  • the propellant gas dissolved in the fog generating fluid which remained in the heat exchanger expands and forces the fluid to flow towards the heat exchanger exhaust.
  • a preferred fog generator would be a fog generator having an alternative way to remove non-ejected steam from the heat exchanger.
  • Another fog generator is described in GB 640 266 A , wherein by means of a first circuit a fog fluid is driven via a nozzle into a heat exchanger. Via a second and separated circuit, a jet of carbon dioxide or nitrogen is provided via another nozzle in close proximity to the fluid delivering nozzle to atomize and propel the fluid into the heat exchanger. When using only the nozzle providing carbon dioxide or nitrogen, the heat exchanger may be purged.
  • GB-A-1 039 729 describes a fog generator wherein the fog generating fluid is driven to the heat exchanger by means of carbon dioxide propellant gas.
  • a valve switches on and off the propellant gas flow to force the fog generating fluid into the heat exchanger.
  • the fog generating fluid will cease to flow and only carbon dioxide will flow into the heat exchanger thereby purging the heat exchanger.
  • a problem of this apparatus is that the heat-exchanger can only be purged after the fluid level in the vessel dropped low enough. Whether it is possible to purge the heat exchanger or not, depends on the fog fluid level.
  • a fog generator in accordance to the present invention is able to purge the heat exchanger independently of fog fluid level in the fog fluid containing vessel. Further, it does not make use of greenhouse gases and it also does not generate malodors upon usage.
  • the present invention is directed to a fog generator comprising a vessel that contains a fog generating fluid, driving means for driving the fluid from the vessel into a heat exchanger which transforms the fog generating fluid into steam and is connected with the vessel, a means for ejecting the steam in the form of a fog and connected to the heat exchanger, characterized in that the fog generator further comprises a means for purging non-ejected steam out of the heat exchanger into the ambient wherein the means for purging comprises a purging unit purging the heat exchanger with ambient air.
  • Figure 1 shows an embodiment of a fog generator in accordance with the present invention.
  • the present invention provides a fog generator comprising a vessel that contains a fog generating fluid, driving means for driving the fluid from the vessel into a heat exchanger which transforms the fog generating fluid into steam and is connected with the vessel, a means for ejecting the steam in the form of a fog and connected to the heat exchanger, characterized in that the fog generator further comprises a means for purging non-ejected steam out of the heat exchanger into the ambient wherein the means for purging comprises a purging unit purging the heat exchanger with ambient air.
  • a fog generator in accordance with the invention does not generate malodors upon usage.
  • the problem of decomposing non-ejected steam leads to the problem of these malodors.
  • oxidation results in formation of amongst others carbon dioxide, carbon monoxide and aldehydes.
  • formaldehyde and acetaldehyde are unacceptable, because of their toxicity and irritating odor.
  • the non-ejected steam is driven out of the heat exchanger before decomposition may occur.
  • the means for purging non-ejected steam out of the heat exchanger may be a gas purging unit, which may be any device suitable for purging a heat exchanger channel, such as but not limited to an air pump, a fan, a blower, or a compressor.
  • the blowing unit is connected at the inlet of the heat exchanger channel or channels and forces the non-ejected steam to flow towards the outlet.
  • a fog generator in accordance with this embodiment is shown comprising a vessel (a) containing a fog fluid and connected to a heat exchanger (b), and a gas purging unit (c) providing purge gas to the heat exchanger.
  • the purging unit provides purge gas to the heat exchanger.
  • Purge gas may be any gas which is low toxic, low inflammable and low corrosive, such as but not limited to ambient air or nitrogen. Preferably, ambient air is used.
  • An air pump, a fan, a blower or a compressor may, in the context of the present invention, be used for providing purge gas, such as but not limited to ambient air for quickly removing non-ejected steam from the heat exchanger channel and replace it with purge gas before decomposition of the fog generating fluid occurs.
  • purge gas such as but not limited to ambient air for quickly removing non-ejected steam from the heat exchanger channel and replace it with purge gas before decomposition of the fog generating fluid occurs.
  • the purging unit may be accompanied by a check valve.
  • Check valves are self-activating one directional valves that permit gases and liquids to flow in only one direction, preventing process flow from reversing. Purge gas is allowed to flow through the valve in the desired direction, while fog generating fluid backflow forces the valve closed.
  • the open direction of the check valve is from the purge gas bulk or the ambient air towards the heat exchanger inlet.
  • the closed direction is from the heat exchanger inlet towards the purge gas bulk or ambient air, thereby preventing the fog generating fluid, which during a fog generation period flows from vessel to heat exchanger, from entering the purge gas bulk or the ambient air.
  • the purge gas may be provided in a continuous gas flow during a period of up to about 15 minutes, and preferably about 10 minutes. Or the purge gas may also be provided with a number of short gas pulses, preferably 3 pulses per minute during about 10 minutes.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Air Humidification (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP07008600A 2007-04-27 2007-04-27 A fog generator Revoked EP1985962B1 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
EP07008600A EP1985962B1 (en) 2007-04-27 2007-04-27 A fog generator
DK10161792.6T DK2207005T3 (da) 2007-04-27 2007-04-27 Tågegenerator
DE602007007298T DE602007007298D1 (de) 2007-04-27 2007-04-27 Nebelgenerator
ES10161792T ES2380578T3 (es) 2007-04-27 2007-04-27 Generador de niebla
AT07008600T ATE472082T1 (de) 2007-04-27 2007-04-27 Nebelgenerator
ES07008600T ES2352787T3 (es) 2007-04-27 2007-04-27 Generador de niebla.
DK07008600.4T DK1985962T3 (da) 2007-04-27 2007-04-27 Tågegenerator
PT07008600T PT1985962E (pt) 2007-04-27 2007-04-27 Gerador de nevoeiro artificial
EP10161792A EP2207005B1 (en) 2007-04-27 2007-04-27 A fog generator
AT10161792T ATE543071T1 (de) 2007-04-27 2007-04-27 Nebelgenerator
PCT/EP2008/054930 WO2008132112A1 (en) 2007-04-27 2008-04-23 A fog generator
US12/596,028 US20100142933A1 (en) 2007-04-27 2008-04-23 fog generator
TW097115494A TW200907285A (en) 2007-04-27 2008-04-25 A fog generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07008600A EP1985962B1 (en) 2007-04-27 2007-04-27 A fog generator

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP10161792.6 Division-Into 2010-05-03

Publications (2)

Publication Number Publication Date
EP1985962A1 EP1985962A1 (en) 2008-10-29
EP1985962B1 true EP1985962B1 (en) 2010-06-23

Family

ID=38514149

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07008600A Revoked EP1985962B1 (en) 2007-04-27 2007-04-27 A fog generator
EP10161792A Active EP2207005B1 (en) 2007-04-27 2007-04-27 A fog generator

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10161792A Active EP2207005B1 (en) 2007-04-27 2007-04-27 A fog generator

Country Status (9)

Country Link
US (1) US20100142933A1 (es)
EP (2) EP1985962B1 (es)
AT (2) ATE472082T1 (es)
DE (1) DE602007007298D1 (es)
DK (2) DK2207005T3 (es)
ES (2) ES2380578T3 (es)
PT (1) PT1985962E (es)
TW (1) TW200907285A (es)
WO (1) WO2008132112A1 (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8422869B2 (en) * 2009-12-16 2013-04-16 Disney Enterprises, Inc. Handheld low-voltage fog effects system
EP2595125A1 (en) 2011-11-21 2013-05-22 Bandit NV A self-defense system comprising a fog generator
ITLE20120012A1 (it) * 2012-12-13 2014-06-14 Antonio Vitali Smoke release elastic pipe
EP2860486B1 (en) 2013-10-11 2015-12-09 Bandit NV Fog-generating device comprising a movable wall in a reservoir
BE1022605B1 (nl) 2014-03-21 2016-06-15 Bandit Nv Ventiel voor vloeistofreservoir mistgenerator
BE1022546B1 (nl) 2014-03-21 2016-05-26 Bandit Nv Warmtewisselaar voor mistgenerator.
ES2635066T3 (es) 2014-03-21 2017-10-02 Bandit N.V. Acumulador de calor para generador de niebla
BE1021942B1 (nl) 2014-06-13 2016-01-27 Bandit Nv Warmtewisselaar voor mistgenerator
TWM528211U (zh) * 2016-06-17 2016-09-11 Ming-Zhen Zhang 用於煙霧機的即熱式加熱器
US10500520B2 (en) 2017-01-23 2019-12-10 Adam G Pogue Bubble, fog, haze, and fog-filled bubble machine
CN111501650B (zh) * 2020-04-26 2022-02-08 高伟 市政街边绿化雾霾营养免洗地根部保温警示结构
IT202100009350A1 (it) * 2021-04-14 2022-10-14 Leonardo Holding S R L Dispositivo nebbiogeno di sicurezza

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US845668A (en) * 1904-10-17 1907-02-26 John B Mendenhall Mold for making metal castings.
GB640266A (en) 1947-06-04 1950-07-19 D & P Studios Ltd An improved method and appliance for creating artificial fog, mist or smoke
GB1039729A (en) * 1963-12-11 1966-08-17 C F Taylor Electronics Ltd Smoke generator
CH630266A5 (en) * 1980-02-19 1982-06-15 Jakob Kamm Evaporation appliance and use thereof
DE3562990D1 (en) * 1984-02-16 1988-07-07 Reinhard Simon Fog generator
USH172H (en) * 1986-03-26 1986-12-02 The United States Of America As Represented By The Secretary Of The Army Air purge system for vehicle engine exhaust smoke systems
DE60107983T2 (de) 2001-06-22 2005-12-15 Bandit Nebelgerät
US20060188238A1 (en) * 2005-02-23 2006-08-24 Kent Carl E Solar heated & powered ultrasonic air freshener diffuser
JP4828918B2 (ja) * 2005-11-07 2011-11-30 ルネサスエレクトロニクス株式会社 気化器及び気相成長装置
US7529472B2 (en) * 2005-12-22 2009-05-05 The Boeing Company Method and apparatus for generating consistent simulated smoke
JP5104151B2 (ja) * 2007-09-18 2012-12-19 東京エレクトロン株式会社 気化装置、成膜装置、成膜方法及び記憶媒体

Also Published As

Publication number Publication date
US20100142933A1 (en) 2010-06-10
ATE472082T1 (de) 2010-07-15
DK2207005T3 (da) 2012-05-07
ATE543071T1 (de) 2012-02-15
DK1985962T3 (da) 2010-10-18
ES2352787T3 (es) 2011-02-23
DE602007007298D1 (de) 2010-08-05
TW200907285A (en) 2009-02-16
EP2207005B1 (en) 2012-01-25
EP1985962A1 (en) 2008-10-29
WO2008132112A1 (en) 2008-11-06
EP2207005A1 (en) 2010-07-14
ES2380578T3 (es) 2012-05-16
PT1985962E (pt) 2010-10-04

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